About the Authors

Seungpyo Hong

Contributed equally to this work with: Seungpyo Hong, Taesu Chung

Affiliation Department of Bio and Brain Engineering, KAIST, Daejeon, South Korea

Taesu Chung

Contributed equally to this work with: Seungpyo Hong, Taesu Chung

Affiliation Department of Bio and Brain Engineering, KAIST, Daejeon, South Korea

Dongsup Kim

kds@kaist.ac.kr

Affiliation Department of Bio and Brain Engineering, KAIST, Daejeon, South Korea

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: SH TC DK. Performed the experiments: SH TC. Analyzed the data: SH TC. Wrote the paper: SH TC DK.